Run results for: Set has vs object key with random search value

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Set.has

6.8M/s

Object[key]

6.6M/s

Includes

467K/s

View exact numbers

Test name	Executions per second
✓ Set.has	6,823,656 Ops/sec
Object[key]	6,603,126 Ops/sec
Includes	467,307 Ops/sec

Script Preparation code:

var obj = (new Array(1000)).fill(null).reduce((prev, newVal) => {prev[Math.random() + ''] = Math.random() + ''; return prev; }, { });
var the_key = Math.random() + ''
obj[the_key] = Math.random() + ''
var array = Object.keys(obj);
array.sort();
var set = new Set(array);

Tests:

Includes
array.includes(the_key)
Object[key]
obj[the_key]
Set.has
set.has(the_key)

Run results for: Set has vs object key with random search value

performance comparison of ways to find if an array contains a value

Includes

Object[key]

Set.has